This book entitled 'Imam al-Juwayni's Luma? al-Adillah fi Qawaid ?Aqaid Ahl al-Sunna wa al-Jama?a (The Luminous Proofs behind the Principle Creeds of the People of the Sunnah and the Majority of Scholars)', or in short, 'Imam al-Juwayni's Luma? al-Adillah - The Luminous Proofs' is an attempt to provide the reader with an English introduction and translation of a classical Arabic work in the subject of ?ilm al-Kalam. The Luma? al-Adillah was written by the Ash?ari Imam ?Abd al-Malik al-Juwayni with the aim to provide his students with a short educational manual on the demonstrable arguments and proofs behind the main creeds of Islam. This translation and annotation, therefore, provides contemporary readers with an introduction to the subject of ?ilm al-Kalam, a brief biography of Imam al-Juwayni, a synopsis of how Imam al-Juwayni systematically set out to demonstrate the rational arguments and proofs of the discourses related to the Muslim creed, and finally with an English translation of Luma? al-Adillah side by side with the original Arabic text.